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TH Preprints

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2013-05-17
04:13
Further exploration of top pair hadroproduction at NNLO / Czakon, Michal ; Fiedler, Paul ; Mitov, Alexander ; Rojo, Juan
Top quark pair production is one of the cornerstones of the physics program at hadron colliders. [...]
arXiv:1305.3892 ; CERN-PH-TH-2013-100 ; TTK-13-15. - 2013. - 8 p.
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2013-05-16
04:12
The Utility of Naturalness, and how its Application to Quantum Electrodynamics envisages the Standard Model and Higgs Boson / Wells, James D (CERN ; Michigan U.)
With the Higgs boson discovery and no new physics found at the LHC, confidence in Naturalness as a guiding principle for particle physics is under increased pressure. [...]
arXiv:1305.3434 ; CERN-PH-TH-2013-102. - 2013. - 7 p.
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2013-05-15
04:06
Optimal polarisation equations in FLRW universes / Tram, Thomas (IPT, Lausanne) ; Lesgourgues, Julien (IPT, Lausanne ; CERN ; Annecy, LAPTH)
This paper presents the linearised Boltzmann equation for photons for scalar, vector and tensor perturbations in flat, open and closed FLRW cosmologies. [...]
arXiv:1305.3261 ; CERN-PH-TH-2013-099 ; LAPTH-025-13. - 2013. - 27 p.
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2013-05-10
13:27
Dualities Near the Horizon / Ferrara, Sergio (CERN ; Frascati) ; Marrani, Alessio (Leuven U.) ; Orazi, Emanuele (Rio Grande do Norte U.) ; Trigiante, Mario (Turin Polytechnic)
In 4-dimensional supergravity theories, covariant under symplectic electric-magnetic duality rotations, a significant role is played by the symplectic matrix M({\phi}), related to the coupling of scalars {\phi} to vector field-strengths. [...]
arXiv:1305.2057 ; CERN-PH-TH-2013-072. - 2013.
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2013-05-10
13:27
QCD resummation in the framework of supersymmetry / Fuks, Benjamin (CERN ; Strasbourg, IPHC) ; Klasen, Michael (Munster U., ITP) ; Lamprea, David R (Munster U., ITP) ; Rothering, Marcel (Munster U., ITP)
Motivated by current searches for electroweak superpartners at the Large Hadron Collider, we present precision predictions for pair production of such particles in the framework of the Minimal Supersymmetric Standard Model. [...]
arXiv:1305.1645 ; CERN-PH-TH-2013-096 ; IPHC-PHENO-13-04 ; MS-TP-13-11. - 2013.
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2013-05-10
13:26
On the Minimum Dark Matter Mass Testable by Neutrinos from the Sun / Busoni, Giorgio (SISSA, Trieste ; INFN, Trieste) ; De Simone, Andrea (CERN ; SISSA, Trieste ; INFN, Trieste) ; Huang, Wei-Chih (SISSA, Trieste ; INFN, Trieste)
We discuss a limitation on extracting bounds on the scattering cross section of dark matter with nucleons, using neutrinos from the Sun. [...]
arXiv:1305.1817 ; CERN-PH-TH-2013-091 ; SISSA 19-2013-FISI. - 2013.
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2013-05-08
13:27
Diagonal Limit for Conformal Blocks in d Dimensions / Hogervorst, Matthijs (Ecole Normale Superieure ; CERN) ; Osborn, Hugh (Cambridge U., DAMTP) ; Rychkov, Slava (CERN ; Ecole Normale Superieure ; UPMC, Paris (main))
Conformal blocks in any number of dimensions depend on two variables z, zbar. [...]
arXiv:1305.1321 ; DAMTP-2013-16 ; LPTENS-13-10 ; CERN-PH-TH-2013-092. - 2013.
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2013-05-08
13:27
A non Supersymmetric SO(10) Grand Unified Model for All the Physics below $M_{GUT}$ / Altarelli, Guido (INFN, Rome3 ; CERN) ; Meloni, Davide (INFN, Rome3)
We present a renormalizable non supersymmetric Grand Unified SO(10) model which, at the price of a large fine tuning, is compatible with all compelling phenomenological requirements below the unification scale and thus realizes a minimal extension of the SM, unified in SO(10) and describing all known physics below $M_{GUT}$. [...]
arXiv:1305.1001 ; CERN-PH-TH-2013-90 ; RM3-TH-13-05. - 2013.
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2013-05-08
13:26
Natural Supersymmetry and Implications for Higgs physics / Kribs, Graham D (Princeton, Inst. Advanced Study ; Oregon U.) ; Martin, Adam (CERN ; Notre Dame U.) ; Menon, Arjun (Oregon U.)
We re-analyze the LHC bounds on light third generation squarks in Natural Supersymmetry, where the sparticles have masses inversely proportional to their leading-log contributions to the electroweak symmetry breaking scale. [...]
arXiv:1305.1313 ; CERN-PH-TH-2013-095. - 2013. - 18 p.
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2013-05-08
13:26
A No-Scale Supergravity Realization of the Starobinsky Model / Ellis, John (King's Coll. London ; CERN) ; Nanopoulos, Dimitri V (Texas A&M U., College Station (main) ; HARC, Woodlands ; Athens Academy) ; Olive, Keith A (Minnesota U., Theor. Phys. Inst.)
We present a model for cosmological inflation based on a no-scale supergravity sector with an SU(2,1)/U(1) Kahler potential, a single modulus T and an inflaton superfield Phi described by a Wess-Zumino model with superpotential parameters (mu, lambda). [...]
arXiv:1305.1247 ; KCL-PH-TH-2013-15 ; LCTS-2013-09 ; CERN-PH-TH-2013-089 ; ACT-3-13 ; MIFPA-13-16 ; UMN-TH-3204-13 ; FTPI-MINN-13-15. - 2013.
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